I hear it all the time. People reach out to me who have been trying desperately to eat healthier or lose weight, lamenting their lack of willpower.

“I try to eat only when I’m hungry, but I just can’t seem to keep my hands out of the snack bowl at work.”

It isn’t always the snack bowl. Sometimes it’s the cracker box before dinner or the peanut butter at night. Whatever the source of the downfall it is always laden with a side of guilt and self-loathing.

On the surface the idea makes sense. If you only eat when you’re hungry then you should be providing yourself just enough fuel to be healthy without overdoing it on calories.

The problem is that you aren’t a car (or a Nutricon), and fuel isn’t the only reason you eat. And the longer you pretend that’s an achievable goal, the longer you will suffer.

Humans eat for many reasons. Hunger is obviously a big one, but there are several others.

On the surface it seems to make sense. In so many parts of life good behavior is rewarded with some kind of treat, whether it was a sticker in kindergarten or a bonus at work. It’s natural to want to apply the same logic to the food you eat, especially if you’ve ever adopted a dieter’s mindset (or trained a puppy).

John Fawkes is a fitness expert who helps people lose weight and get into the best shape of their lives by gradually changing their habits. His sustainable approach to fitness allows people to look sexy and feel great about themselves, on fitness programs that are easy to follow.

In the movies the mad scientist works in his lab developing an experimental super-soldier serum. When he thinks he has the formula right he injects himself with it, and lo and behold he becomes superhuman.

As a kid I always wanted to do that. And as an adult, I learned that I can––minus the needles, experimental steroids, and insanity. Running experiments on yourself is totally possible, and very very effective for improving your habits and quality of life.

Unlike traditional scientific experiments, self-experiments don’t have a bunch of research subjects. They just have one: you. That means they aren’t very good at finding out what works for people in general, but they’re great for finding out what works for you specifically.

In fact, I’ve run over a dozen self-experiments lasting one or two weeks each, and many of them have produced massive improvements in my life and health. If you want to learn how to do this for yourself (or copy a few of my most successful experiments) read on.

All I remember is staring at the open box in shock. Did I really just eat 3/4 of a large cheese pizza by myself?

One. Two. Yep, only two slices left.

I was a sophomore in high school and my parents were out of town for one of my brother’s sporting tournaments. I was old enough to be left home alone to work and study.

Normally this meant a free pass for me to subsist on coffee and Frosted Flakes for a few days (remember when dieters were scared of fat instead of sugar?). But this evening something got to me.

Looking back on everything I had going on at the time it was probably stress and anxiety from juggling my daily ballet lessons, teaching at the studio to pay the bills, and getting up before dawn to start my rigorous course work at school.

Or maybe I was just hungry.

I didn’t know what to do for dinner so I called the pizza delivery place that my family loved. I knew this wasn’t good behavior for a ballerina and chronic dieter who still desperately wanted to lose weight, but something compelled me.

It took several minutes after I stopped eating before the sick, bloated, oily feeling took over. The lingering smell of cheese in the house made me feel nauseous, so I took the remaining pizza and box to the trash outside and pushed it as far into the bin as I could manage.

I just experienced my first East Coast blizzard and it was so exciting. While my dog Toaster frolicked in fresh powder and my husband tried to become a living snowman, I was on a singular mission to warm the house with an 8-hour braised pork shoulder seasoned with chilies and Mexican spices.

Of all the things that trigger cravings for comfort food, cold weather is pretty universal. Being cold is deeply uncomfortable, and our natural instinct is to want to warm ourselves both inside and out.

But while your instinct to maintain your core temperature may explain why you don’t yearn for salad and gazpacho in the dead of winter, it doesn’t condemn you to four months of pancakes and mac n’ cheese. If you understand what your brain is ultimately after, you can tend to your deepest needs without diving head first into the cookie jar.

Recently I was having a conversation about exercise with a friend who is trying to lose weight. He had just hired a super hardcore trainer who wanted him to workout 2 hours a day, four days a week, for the next several months. This was paired with a strict diet of chicken breasts, broccoli and brown rice.

“Are you sure that’s realistic?” I asked, already knowing the answer.

I’m pretty fit, but such a training schedule would be difficult for me if for no other reason than it is a huge time commitment and I would have to sacrifice other things I care about in my life to make it work. My friend has been sedentary for most of his adult life, and is constantly complaining about being too tired and too busy to take care of himself. There was no way this would last.

My friend went on to explain that he knew it would be challenging, but it was something he needed to do. His doctor recently told him that he had to lose 40 lbs to clear up his sleep apnea and control his cholesterol and blood pressure. And drastic situations call for drastic measures.

I could see my friend’s logic on the surface, and he took an impressive step by deciding to take more control of his health. But I could also see that he had fallen into what I call the Not Enough Fallacy.

UPDATE: The Mindful Meal Challenge was such a success we’re going to run it again every week. Sign up now to start on Monday!

Mindful eating is the most underrated health habit everyone is talking about. Self-proclaimed wellness websites love to tout the benefits of slowing down and savoring your food, yet it almost never comes up in conversation with someone who is serious about losing weight or improving their health.

This is probably because mindful eating is a deceptively simple idea that is incredibly hard to implement.

Most people aren’t even sure what mindful eating actually is, and so they say things like “I try to eat mindfully” then just keep eating the way they always do and hope that one day they’ll magically stop going back for seconds. Fat chance.

But mindful eating really is an amazing thing if you can turn it into a habit. Focusing on the experience of eating has a bigger impact on how satisfying a meal is than the number of calories it contains (1). As a result you enjoy your food more, while naturally eating less.

Eating mindfully can also make you less vulnerable to eating triggers that can cause you to eat more quickly (2) and overeat (3).

Personally, mindful eating has helped me feel back in control of my eating experience. When I was a dieter one of the terrible eating habits I developed was gobbling my food in a frantic rush whenever I sat down to a real meal.

My frenzied eating was trigged by a combination of extreme hunger (since I rarely let myself eat when I wanted) and the guilt I felt from giving into it, making me want to get the meal over with as quickly as possible. These were not my finest moments.

Mindful eating is what enabled me to snap out of my frantic mindless eating habit and actually appreciate the beautiful food I am so lucky to have access to.